How To Fix A Car That Idles Poorly (Clean the IAC)
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- Опубліковано 4 жов 2024
- How to clean a throttle body and Idle air control valve (iac). This shows you how to fix a high idle, low idle, and or rough idle. Most modern cars have an idler air control valve (IAC) that can get gummed-up and you have to clean it.
Be aware that unplugging the IAC can trigger a check engine light (use a scanner or disconnect the battery to get rid of the light). If you have any questions feel free to ask below. If this helps also let me know (I like to know when I help someone out!).
Codes that can be triggered are, P0401, P0505, and P0507
IAC Cleaner: amzn.to/2iWJDma
*If the video was helpful, remember to give it a "thumbs up" and consider subscribing. New videos every Thursday*
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Disclaimer:
Due to factors beyond the control of ChrisFix, I cannot guarantee against improper use or unauthorized modifications of this information. ChrisFix assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. Use this information at your own risk. ChrisFix recommends safe practices when working on vehicles and or with tools seen or implied in this video. Due to factors beyond the control of ChrisFix, no information contained in this video shall create any expressed or implied warranty or guarantee of any particular result. Any injury, damage, or loss that may result from improper use of these tools, equipment, or from the information contained in this video is the sole responsibility of the user and not ChrisFix.
Here is my newest video on "how to fix a car with a rough idle" for those who need it : ua-cam.com/video/KhvqT3blzVs/v-deo.html
Hey Chris! First of all, great job with all your videos, i learned many things from them. Second, the video you mentioned above is not accesibile (video is private). Please check why is that! All the best from Romania, keep up the good work. Can't wait to see your next videos :)
Private video?
Hey Chris, already watched it
Hey chrisssss pls say hi back
oh my goodness how old were you in this video?
HEY GUYSSSS!! CHRIS FIX HERE!!!!!
In case anyone needed that
I did. thank you
thanks bro
i did .. it was sad.
Get a friggin life!!
I was waiting for this and had to check if I clicked the correct video haha
Hi young Chris, old Chris sent me here....
me to bro
Same
Who’s here from his new video?
Awesome!!!! 💪
Me
me too!
Who here from the new video like the main comment
me bro
hey Chris, I’m from the future - just letting you know that you’ll be redoing this video 7 years from now 😄✌️
😂😂🤣
It’s pretty cool to see how the quality of his videos have improved so much over the years
Uhmm.. maybe "improved" ??🙄
@@timothylucas5087 hahahaha 🤣
Timothy Lucas 🚔 🚨
fixed it for ya lol
Lol
Whatever my car, whatever my problem, I end up every time with at least one Chris Fix video. A year ago I doubt I could tell you what's what under a bonnet, now working on a car is one of my few forms of relaxation. Thanks as always Mr Fix!
That is awesome!
Chris Fix! Ya did it again Buddy. I was chasing vacuum leaks on a stalling idle with no luck. Saw your video. Popped the IAC, blew it clean with sensor cleaner and it idles like a Timex. Thank again.
Awesome! Glad to hear it!
Nice! I had a feeling it was something to do with the throttle-body! Glad you fixed it!
Showing the idle beforehand would've been golden. Good job.
+apb38 Thanks!
+ChrisFix I have 3 cars I'm having problems with. 97 Acura CL and 2 2000 BMW 3&5 Series. What would yu say an average or good RPM at cold start should be? On average. I'm at about 1100RPM on all 3
Jose Nambo That sounds about right, depending on the level of cold it could go higher.
+apb38 I haven't cleaned it out yet. I'll do that today when I get home and I hope the idle lowers at least to less than 1000rpm.
apb38 was that a p1070 code running to lean???
I wish I had had this video 10 years ago....
My 1995 Ford Contour V6 had serious idle problems for months. Finally it had to be towed to the dealer and they replaced this idle valve.... 10 years ago I hardly new anything about "modern" cars. Thanks to UA-cam videos like this, I have substantially improved my DIY automechanic skills.
1997 Ford Ranger 3.0 L ; Had serious problem with VERY HIGH idle speed 2300RPM.
Watched Chris's video and followed his advice.
Vacuum leaks everywhere, literally the old hoses just crumbled in my fingers. Wear gloves when your spraying carb cleaner and handling old hoses. First I unplugged the Idle Air Control Valve, idle went to 800rpm.
Removed the ( IACV), sprayed carb cleaner into the bottom holes holding the part vertical like Chris demonstrated. Soaked the valve while I went for parts. Later.
Cleaned the carbon junk with Q-tip . Reinstalled everything. Started the motor, right away the motor just purred at idle 800rpm. Thanks Chris
Awesome! I'm glad this was able to help you!
I'll try this on my V10 Redbull F1 car, the idle is insanley high, get this around 6000rpm
This made a big difference in my '89 S-10 4.3L. I can't emphasize enough how important it is after working on ANY sensor to operate the vehicle several times so the computer can "relearn" the correct idle speed. My '89 idled way too fast at first, but a few starts and stops solved that; I think the old gal has another 10 years in her! (the truck, not my wife!)
So there was no method of pressing the pedal and turning the key for a designated amount of time?
thanks for the tip on the stop and start a few times.. I'd of freaked out after doing this myself and not knowing that little bit.
Oh man, I laughed out loud at the end of your comment! Caught me off guard haha
some ecu learn based on time running i believe Thanks m dogg for reminder to run a while. I just chngd my idle control motor and was hoping it's fixed, but maybe it is just re-learning and will take a crap again lol uh oh
😂😂😂😂
Dude just seeing how much you improved with your content, voice tone, editing, skills and everything it's amazing, it shows how no one was born with talent you just simply learn. You helped me a lot in this car journey, thank you so much for that.
Did this to my 88 Ford Taurus, and so far it seems I didn't break anything lol and my engine doesnt seem to be stalling anymore. The only weird thing about my control valve was it had some sort of spring and plate attached to one of the bolts and had a bunch of trouble getting it off, but in the end got everything assembled to how I believe it went. Chris fix is one of the most crystal clear mechanics on youtube!
You make things look so easy that people want to do them. Continue being like that please!!
Helping people out with car problems since 2013. Thanks Chris, you’re awesome!!
New Chris: Wears goggles and gloves for safety
Old Chris: I don't have such weaknesses
Old Chris:"Ow...MOM!!!"
Chirs' Dad:"I told you to wear protection...and that's not just cars son..."
@@daisanroninosuke3671 😂🤣
LOVE how you explain the workings and problems to each part!! I am new at fixing an old car, so these are perfect.
This must of been one of the first vids from the man Chrisfix. His videos have gotten 10 times better!
This was one of the first!
Wow, just found this video, 7 years later. Amazing how well your presentation has progressed.
It's interesting to see the improvement in presentation from earlier videos like this one to the more recent videos.
This was still very helpful, but you have clearly upped your game over the years!
Thanks for everything.
ChrisFix listen to yourself 4 years ago , then listen to yourself now
GodliestGodoftheGods Totally different.
GodliestGodoftheGods he is happir now then EVERRRRRR!
Shane_sleeperjetta he didn't have enough elbow grease back then
Rusty stfu
2012: .hey guys
now: HAYY GUYSSSSS
Definitely an improvement with your UA-cam confidence
Haha to say the least right?
My Ranger was idling at around 1200-1400 and was surging quite a bit. I decided to look up why it would be surging and sure enough, everyone was saying it was the Idle Control Valve and and I ended up here. I saw this and your other video on cleaning the Mass flow sensor so I decided to clean both. Sure enough, my engine is now idling at 850-950 and no longer surging.
Thanks a lot for the video, it helped quite a bit.
+Chris J AWESOME! Glad the video was helpful!
I was able to clean mine today and fix my idle issues. Thanks for the clear explanation and helpful cautions.
So old! Crazy how he didn't have his mojo and charisma yet. Still solid, but his videos now are tremendous.
I just recently changed my idle air control valve and it made all the difference in the world. My computer actually controls the car now.
I'm glad that fixed any problems you had!
This guy is consice and well detailed I really like that, when I watch Eric The Car guy there's tooo much unnecessary crap being said which makes him difficult to follow and Scotty he's just gets straight to the point which is also good but too fast, Chrisfix is CLEAR AND CONCISE, Good job Chris now I will do this on Monday.
Thanks, Chris! Ended up just replacing the entire IAC on a 94 5.7L Chevy. This and replacing the TPS and TPS connectors solved a poor idle and fluttering RPM issue. Great video!
+BigMtnForever Awesome! Glad to hear it!
Chris in the off chance you see this comment, i must say you made incredible strides in the production quality of your videos. What you do is a gift to the people of the world (at least those who like working on their own cars). Love from israel.
Thanks for the support from Israel!
Have been following u for a couple of years, saw you in this very different avatar today, but just as effective. Saved a lot of time, energy and money yet again today following you.
I’m glad he shows to clean the soot from the area where the iac valve is. Most videos show just replacing it. I recently replaced my iac valve on my subaru and it was full of carbon and oil deposits. I’m a newby and was hoping to find out what caused the buildup and fix it myself
I wish u were my personal mechanic
Me too😍😍😍
Beyondthestars or just a mate 😂
@ChrisFix Awesome Job bro. I have a 99 Pontiac Grand Am. Very rough and sometimes stalling at idle. Took it to the mechanic (should have gone to your channel first) and $500 later I was in the same boat. After watching this video, and a few minutes of labor, it's running like brand new. MANY thanks and keep up the good work!
No problem. You can also use smoke to see which vacuum line and where your vacuum line is leaking.
Chris, I watched this when you posted it just to watch it and support you.
I'm back here after 10 years to watch it again to help me with a problem on my own mustang. Thanks buddy. Keep it up.
Thanks a lot, I got a much smoother idle in my old Taurus after I did this.
I'm glad the video was helpful!
Thank you, Christ for your help. I just fixed my son's pathfinder 93, with your help. ..!
Byron Ramirez AWESOME! Thanks for letting me know!
Nice to have you around here Chris, you help a lot sharing your knowledge!
Actually to be a 7 yo video you were pretty good already.
Greetings from Chile and hope to see you again: D
Thank you Chris.... Lol 7 years ago to now.... What a change but still the same professional.
thanks a lot bro your video helped I was stressing and it was just a simple unplug and replug
Wow compare the tool's from then and now...But as we say in my country,"τα εργαλεία δεν κάνουν τον μάστορα" that means "if you have the tool's that doesn't mean you are a craftsman." But you have the brains that is the most important tool and even with a cheap rachet you had the job done 😀😀😀
Throwback video!! The oldest I’ve ever found of yours is 4 years old! Love your vids bro. Shoutout from Chicago. Chris to Chris lol 🤘🏼.
Wow big difference from ChrisFix content from 2007 up to now 2020!! Nice job!!
I just replaced this in my 01 f150. Starts with more of a power sound, run better during idle, accelerates a lot better and my gas mileage has improved.
@Beast Mode under the black or gray engine cover that sits on top. Remove the 3 bolts
Great job on this video. Made it very easy for anyone to remove and clean this component. (28 years) mech on Helicopters, Cars, Trucks, and Boats, says two thumbs up!
Thanks a lot!
Thanks Chris! You explained things very well which of course made it easy to understand. Good Job!
When Chris was bit unsure of his content and was cleaning car parts surfaces with his fingers and pawn if his hands. Crazy times hey! Today is hey guys wearing blue gloves using micro paper towels. Congrats man on your way to development and success. I guess the life lesson is you adapt, learn, manage, achieve and grow.
100%
Ive finally figured out the rough idle mystery. thanks!!! changed EVERYTHING and after this video.... shes a rocket!! 95 trans am. Lt1
Even your old videos are great man! Keep up the good work!
Thanks a lot Matthew!
Worked like a champ! Thanks for posting!
what a blast from the past!
new chris sounds so much more confident and dynamic.
Yea, you are mistaken. OBD1 is for all cars 1995 and older (depends when they started implementing it on cars). OBD1 was pretty much a test for the govt required OBD2 system which was mandatory on all vehicles built in 1996 and earlier.
Amazing to see how comfortable you got with us!!
It can be a lot of things. I would first check for a vacuum leak (listen for a whistling/sucking sound while the engine is running). Next thing i would check is your mass airflow sensor. Since it stops happening when the car goes into closed loop (it warms up), it is a problem during open loop. In open loop, the MAF sensor and computer fuel tables are used. Do you have a check engine light on?
Chris talks way more smooth after 7 years of making videos. Should make more series of video what you do different than 5-7 years ago.
I love that IAC cleaning Chris...
Thank you.
You just can't beat a ChrisFix video.
In my experience I've found it much easier to use a pick tool to get the dry carbon out first. It just cracks off and falls out so much easier. For the remnant carbon then use throttle body cleaner (or other aerosol cleaner). Makes for a more efficient use of time and more thorough cleaning. You definitely know your stuff just have that tip to share.
Thanks for the tip! I didnt include the pick idea you have because a lot of viewers dont know much about cars so they might break something in the process. But yes, that is def another way of doing it! Cheers!
ChrisFix Your GM IAC looks very similar to my Ford EGR. It's weird almost the same design used for 2 completely different systems. Same piston/stopper inside too. Kinda neat. Keep up the great videos.
Thanks!
So throttle body cleaner will work as well or carburator cleaner? Cus i bought the throttle body cleaner and I'm not trying to buy another spray to get the same job done
7 years ago vs now there is lot of difference between now and then but chrisfix is chrisfix
just did this on my surge idking '85 crx and it now idles perfectly. many thanks etcg
This isn't Eric the car guy
8$ fix. Easy as pie. Thanks Chris, you are in a class all by yourself
Could be a lot of stuff... Are your exhaust manafolds glowing red at all? Do you have a vacuum leak? Are there any check engine lights? Is your air filter clean?
watched both the new and old videos and I have to say they both taught me something.
Thank you very much!!!! jus t fixed my 96 ranger!
AWESOME! Thanks for letting me know! I love hearing success stories from my viewers!
Old guy Chris wasn't energetic. The modern Chris has some kind of holy energy which lights up my soul
Chris can you please make a video on vaccum leaks :'//// all the vidoes on vaccum leaks are hard to follow and don't show how to actually fix the leak. I need your knowledge on this seriously
I bought a really cool smoke machine on amazon. It was designed for small parties and was like $35 and free shipping. I just put a small hose on it and inserted it into my vacuum line and turned it on. Found the vacuum leak in seconds. Smoke came out of it. Not harmful at all. Also did the same thing on another car to find an exhaust leak. Put the small hose in the tailpipe and taped it shut and hit the smoke machine a few seconds and saw the smoke coming out of a bad weld. It was an inexpensive investment and works great at small parties too. :)
Brad DeRosby that's actually really smart lol
i use a unlight propane torch to find the vac. leak. when you get close to the leak the engine will smooth out and increase rpm. now thats old school. lol
Fricking dumb if you ask me... minuscule spark from anything (worn sparkplug wire for example) and KA-BOOM!!!
Carb cleaner is quite flammable as well but at least you have been control of it than an invisible gas. Just a thought.
Far From Perfect Actually it’s perfectly safe because the “smoke” has no spark, it’s basically like vape smoke. If anything enough of that might cause a very small percentage of moisture inside the lines, but even then the percentage of moisture is minuscule enough not to cause damage in the short amount of time one would need it hooked up. Another thing is that if you take your big head to a mechanic and ask them to find a vacuum leak they should have a machine there that will do the same exact thing as this guy stated only thing is it will cost you around $50. All that being said it isn’t dangerous for humans or engines for that matter. And his idea isn’t original, it’s a technique that mechanics have been using for quite some time in their shops. The carb cleaner technique is much more dangerous.
I came across this video while diagnosing my Ranger, and I've been watching Chris Fix for about 4yrs now, so when I saw this I was like "Imposter!" Lol
where I live they charge $30 just to use the code reader...lots of mechanics here are plain thieves, it is hard to find a good honest mechanic.
Go to Autozone and read the code for free
@@jonomotive2000 lol he must live in CA it cannot be free due to legislation....nothing but thieves and scammers out there.
PerfectChaosdoesntEx I live in CA
O’Reilly and autozone check codes for free
What a ripoff!! You can buy a cheap ODBII code reader for $30 from Harbor Freight, good enough for most people.
Great info! I injected the (SCTBU) "shake can thoroughly before use and BAM the flux capacitor began to wiggle parse the Y2K mainframe! Thank god this is working now. You are a life saver.
You sound way more energetic in your newer videos. Also great content
Money is a good motivator......
It feels so weird watching your old videos like in your new ones you have so much energy, man im used to your heyy guyss its chris fix here 😂😂
It’s more chilled I prefer it
ChrisFix watching in 2018
thanks chrisfix this works i had a high idle about 900 rpm with a loud humming noise i removed the IAC Valve and cleaned it with carb cleaner and now the car idle steady at 650-700 rpm with no humming noise 2001 ford expedition 4.6 v8 thank you
I'm glad the video helped you out!
What for an Olds Cutless?
Who else is watching this in 2020? Chris sure has come a LONG way with his mad skills 👍🏼👍🏼
This is so old my man is using one of those $2.99 ratchets from the parts store 😄
Hahahaha
Pls show how to clean the throttle body, you are so detailed it would help a lot!
Chris. I want to suggest you making a video on how to make a vacuum leak smoke machine.
Yes this is GOLD
Here is a possibility:
a.co/aw5Usht
I have a 99 Expedition and the IAC looks just like the one in the video. I took it off to clean it b/c the engine would sometimes idle at 1500 rpm or so when first started. After cleaning my IAC like Chris in the video, my Expy idles as it should! The great part: I saved myself $150+ by doing it myself! Thanks +ChrisFix!!
Austin Griffin How long did you run the engine? The check engine light will come on for sure. Once it detects that the IAC is not connected and it checks that a few times to make sure, it will come on.
When the car is idling and I turn the air con on the engine revs drop low and it shudders and dies out
This is because the car is not adjusting for the extra load put on by the AC at idle. Check the IAC like in this video. If it is dirty or broken it wont open up all of the way and you cannot get enough air.
Thanks I'll check it at the weekend.
Mashud Ahmed Keep me posted
Idk why my comments dont allow a reply. I appreciate the response. I will try it again and see what happens. Thanks Chris.
look at how the production value changed! keep up the good work
So, the question is: q-tip or brush?😂😂
Now the he has the money, brush!!
Hey, ChrisFix! You're absolutely right - the videos are FAR more refined now. Great job! The information you bless us with is very helpful. 👊🙌☝️
Whos here from the recent vid? 🙋♂️
I did
I just watched the idle air controller valve vid.
This is the absolute BEST auto quick fix channel in all of UA-cam. Outstanding work ChrisFix. You're a champ.
IMPACTxYoungfk Thanks a lot man! I am glad you like my videos and work hard to make them the best! Remember, new automotive 'how to' videos every Thursday and most Mondays!
***** Thanks man! Merry Christmas and Happy New Year to you too!
My car will idle at 500 rpm. Then it will dip like its gonna stall then it will jump back up to 500. What could be the problem?
Watching both videos is so cool. Its like seeing your favorite Baseball player going from Little League to hitting home runs in the World Series. Chris is my favorite UA-cam person. His videos make me want to break stuff just so I can fix it!
Who else came to this vid to the newer version of this one
You improved a lot man, really.
I just watch your stuff for fun now.
i came from the future lol
Nice to go back in time and watch some of your original content 👌 👍
Before:- no hand gloves
Now :- oil is not good for skin so wear hand gloves
I will be doing this next weekend. My car was skipping and idiling rough. I've changed the plugs and wires AND the 02 sensors. Runs much better but still having idling issues but not as bad. My next check it the IAC. Thank you for posting.
Anyone watching in 2K19
No 2020
2020
Tech Addy Lol nice use of the NBA reference.
@Duke of Haphazard 😂
Dude you rock, your the best UA-cam mechanic period
My gasket was loose when I cleaned mine and throttle body cleaner seeped between it and the valve.
When I re-fitted it the car was very rough and and would not idle properly for days.
Don't make this mistake.
I started watching this, and I'm like that voice sounds familiar and then of course I see it's Chris fix 2013 lol. Appreciate your page man and proud of you, from a former brick- and-mortar entrepreneur.
Very professional channel after all these years.
Find your passion and you'll never work a day in your life.
what is the source of soot in the throttle body?...
+pei bossman Exhaust gasses. Gasses get run back through the engine for emissions purposes and are often oily and sooty. They'll coat the back of the throttle body and IAC, sometimes to the point where the passage from the IAC is mostly blocked.
Cheap gas can cause carbon build up.
In my case it was both poor ignition coil function allowing unburnt gasses back through the vacumn hose, and because the ig coil had been only partially combusting the sparks were fouled a bit and my idle control motor also needed replaced and my 02 sensor had gone bad from the soot... once you have something causing soot, you gotta go back through a lot of affected components and sensors and clean up the mess, after you resolve the firing issues. Otherwise, crap still run poor. Carbon cleaner on air sensor. Change air filter if the re-circ gasses were blackening that. Look at all the common sense stuff (whatever had air/vacumn air (stuff connected to air box with vacumn or return hoses) or exhaust (02 sensor) going over it.
pei broker the source of the carbon build up is the pcv valve and to a lesser extent the EGR valve.
thanks for this Video Chris,now i know what to tell a mechanic. I do have a 2004 Chrysler sebrine, it idles when I am at the Light and sometimes it will die ,it does start right back up though, I dont know much about car repair, your video just gave me an insight in the likely problem.I appreciate you time thanks